|
@@ -0,0 +1,102 @@
|
|
|
+package com.yonge.cooleshow.websocket.service;
|
|
|
+
|
|
|
+import com.alibaba.fastjson.JSON;
|
|
|
+import com.yonge.cooleshow.websocket.po.Message;
|
|
|
+import org.springframework.stereotype.Component;
|
|
|
+
|
|
|
+import javax.websocket.*;
|
|
|
+import javax.websocket.server.PathParam;
|
|
|
+import javax.websocket.server.ServerEndpoint;
|
|
|
+import java.io.IOException;
|
|
|
+import java.util.Date;
|
|
|
+import java.util.concurrent.ConcurrentHashMap;
|
|
|
+import java.util.concurrent.atomic.AtomicInteger;
|
|
|
+
|
|
|
+@ServerEndpoint("/webSocket/{userId}")
|
|
|
+@Component
|
|
|
+public class WebSocketServer {
|
|
|
+ //静态变量,用来记录当前在线连接数。应该把它设计成线程安全的。
|
|
|
+ private static AtomicInteger onlineNum = new AtomicInteger();
|
|
|
+
|
|
|
+ //concurrent包的线程安全Set,用来存放每个客户端对应的WebSocketServer对象。
|
|
|
+ private static ConcurrentHashMap<Long, Session> sessionPools = new ConcurrentHashMap<>();
|
|
|
+
|
|
|
+ //发送消息
|
|
|
+ public void sendMessage(Session session, String message) throws IOException {
|
|
|
+ if(session != null){
|
|
|
+ synchronized (session) {
|
|
|
+ System.out.println("发送数据:" + message);
|
|
|
+ session.getBasicRemote().sendText(message);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ //给指定用户发送信息
|
|
|
+ public void sendInfo(Long userId, String message){
|
|
|
+ Session session = sessionPools.get(userId);
|
|
|
+ try {
|
|
|
+ sendMessage(session, message);
|
|
|
+ }catch (Exception e){
|
|
|
+ e.printStackTrace();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // 群发消息
|
|
|
+ public void broadcast(String message){
|
|
|
+ for (Session session: sessionPools.values()) {
|
|
|
+ try {
|
|
|
+ sendMessage(session, message);
|
|
|
+ } catch(Exception e){
|
|
|
+ e.printStackTrace();
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //建立连接成功调用
|
|
|
+ @OnOpen
|
|
|
+ public void onOpen(Session session, @PathParam(value = "userId") Long userId){
|
|
|
+ sessionPools.put(userId, session);
|
|
|
+ addOnlineCount();
|
|
|
+ System.out.println(userId + "加入webSocket!当前人数为" + onlineNum);
|
|
|
+ }
|
|
|
+
|
|
|
+ //关闭连接时调用
|
|
|
+ @OnClose
|
|
|
+ public void onClose(@PathParam(value = "userId") Long userId){
|
|
|
+ sessionPools.remove(userId);
|
|
|
+ subOnlineCount();
|
|
|
+ System.out.println(userId + "断开webSocket连接!当前人数为" + onlineNum);
|
|
|
+ }
|
|
|
+
|
|
|
+ //收到客户端信息后,根据接收人的userId把消息推下去或者群发
|
|
|
+ // to=-1群发消息
|
|
|
+ @OnMessage
|
|
|
+ public void onMessage(String message) throws IOException {
|
|
|
+ System.out.println("server get" + message);
|
|
|
+ Message msg=JSON.parseObject(message, Message.class);
|
|
|
+ msg.setDate(new Date());
|
|
|
+ sendInfo(msg.getTo(), JSON.toJSONString(msg,true));
|
|
|
+ }
|
|
|
+
|
|
|
+ //错误时调用
|
|
|
+ @OnError
|
|
|
+ public void onError(Session session, Throwable throwable){
|
|
|
+ System.out.println("发生错误");
|
|
|
+ throwable.printStackTrace();
|
|
|
+ }
|
|
|
+
|
|
|
+ public static void addOnlineCount(){
|
|
|
+ onlineNum.incrementAndGet();
|
|
|
+ }
|
|
|
+
|
|
|
+ public static void subOnlineCount() {
|
|
|
+ onlineNum.decrementAndGet();
|
|
|
+ }
|
|
|
+
|
|
|
+ public static AtomicInteger getOnlineNumber() {
|
|
|
+ return onlineNum;
|
|
|
+ }
|
|
|
+
|
|
|
+ public static ConcurrentHashMap<Long, Session> getSessionPools() {
|
|
|
+ return sessionPools;
|
|
|
+ }
|
|
|
+}
|